COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 716 Konkoly Observatory Budapest 1972 September 12 NEW FLARE STARS IN THE PLEIADES REGION (1971-1972) During the months of October, November and December, 1971 and January, 1972 we obtained 115 ultraviolet multiple exposure plates centered in Alcyone. The number of different exposures were 725 and the total time of effective observation 135h45m. Table 1 summarizes our results but only comprises the new flare stars found. The many flare-up repetitions in the previously known flare stars are not included. The numbering of the new flare stars is the continuation of the new serial numbers used by Haro and Gonzalez (1972). August 28, 1972 G. HARO and E. CHAVIRA Instituto Nacional de Astrofisica Optica y Electronica Tonantzintla, Mexico References: 1) Haro, G. and Gonzalez, G. 1972. IAU Information Bulletin on Variable Stars, No. 715. Table 1 New Flare Stars in the Pleiades Region (1971-1972] --------------------------------------------------------------------------- No. Star R.A. Dec. Mag.in U Delta mU Date of Flare-up (1900) (1900) at minimum --------------------------------------------------------------------------- 13b 3h36.2m 21d57' 19.3 3.5 14 Nov. 1971 14b 3 36.8 23 02 19.5 3.5 20 Nov. 1971 14b_ 3 36.8 23 02 19.5 5.5 21 Nov. 1971 15b 3 37.3 23 15 20.5 6.3 15 Dec. 1971 16b 3 37.9 24 44 20.0 5.1 15 Jan. 1972 17b 3 38.1 23 55 21.0 5.7 12 Nov. 1971 18b 3 38.4 24 17 20.7 5.5 12 Nov. 1971 19b 3 38.5 25 03 20.0 3.8 22 Nov. 1971 20b 3 39.3 23 48 18.3 2.0 10 Dec. 1971 21b 3 39.5 24 44 21.0 5.7 22 Dec. 1971 22b HII 628 3 39.5 24 25 16.0 0.8 17 Oct. 1971 23b 3 40.4 23 43 20.5 7.2 17 Dec. 1971 24b HII 1009 3 40.5 24 09 17.5 1.0 12 Dec. 1971 25b 3 40.8 25 09 19.0 3.2 23 Nov. 1971 26b 3 40.9 22 46 18.8 2.7 12 Dec. 1971 26b_ 3 40.9 22 46 18.8 2.9 20 Dec. 1971 27b HII 1280 3 41.1 23 51 16.8 0.9 15 Nov. 1971 27b_ HII 1280 3 41.1 23 51 16.8 0.6 11 Dec. 1971 28b HII 1321 3 41.2 23 26 17.6 1.3 18 Nov. 1971 29b 3 41.4 23 25 20.0 5.0 16 Nov. 1971 30b 3 41.4 21 56 17.5 2.0 12 Dec. 1971 31b 3 43.2 22 48 19.8 6.2 22 Nov. 1971 32b 3 43.4 25 31 16.3 1.8 12 Nov. 1971 33b 3 46.7 24 27 15.4 2.2 12 Dec. 1971 34b 3 49.6 23 29 16.0 0.7 14 Dec. 1971 ----------------------------------------------------------------------------